Malicious PDF — malware analysis report

Static analysis result for SHA-256 12f82f11131a5ae5…

MALICIOUS

PDF

84.4 KB Created: 2021-03-15 00:52:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc16f74f5f9f4bd59fdb09bc222dc2a1 SHA-1: dbd943959b67516b790ff68de65b34383e33121b SHA-256: 12f82f11131a5ae5e466b0e6752a93c17c459edebf836e26377e1390980e4a20
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to technical documentation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://nipisod.ru/award?keyword=air+conditioning+and+refrigeration+technology+pdf
    • https://cdn-cms.f-static.net/uploads/4393358/normal_5fd74f9581786.pdf
    • https://static.s123-cdn-static.com/uploads/4473023/normal_5ff76ca310c96.pdf
    • https://cdn.sqhk.co/lamidipeke/hh9igMY/bevor.pdf
    • https://cdn.sqhk.co/gifexajed/iaR2Mjf/virtual_piano_lessons_app.pdf
    • https://cdn-cms.f-static.net/uploads/4365575/normal_603579268772d.pdf
    • https://cdn-cms.f-static.net/uploads/4493876/normal_6046558f0b7f8.pdf
    • https://cdn.sqhk.co/kigaratak/0ogenje/dish_hopper_customer_service_number.pdf
    • https://cdn-cms.f-static.net/uploads/4391008/normal_6044fd869eb62.pdf
    • https://cdn.sqhk.co/kojetovukufo/ejdNOig/ancel_fx_4000_manual.pdf
    • https://cdn.sqhk.co/retagigimusa/UtjakGn/kowatijivojapepazomonofu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://kewivifonawati.epizy.com/monsters_vs_aliens_show_cast.pdf
    • https://s3.amazonaws.com/levumoduf/36529621949.pdf
    • https://uploads.strikinglycdn.com/files/b9024480-6d89-4be8-92ed-2c95c09596f0/what_is_in_the_taco_bell_breakfast_crunchwrap.pdf
    • https://s3.amazonaws.com/jesidofefe/91582950875.pdf
    • https://s3.amazonaws.com/niporofez/mujimoditaroxalubikerov.pdf
    • http://luvenawow.epizy.com/can_you_use_nair_sensitive_formula_on_pubic_area.pdf
    • https://s3.amazonaws.com/pidufozu/vonogavur.pdf
    • https://s3.amazonaws.com/gopuze/auto_reject_call_with_message_android.pdf
    • http://muwenujuwup.rf.gd/pixeligakitusetolaf.pdf
    • https://uploads.strikinglycdn.com/files/020e2cd7-6f4c-4301-9da3-c6695f324c13/how_do_you_clean_a_keurig_coffee_maker_2.0.pdf
    • https://uploads.strikinglycdn.com/files/2fd0c3b1-6537-4e69-91f1-00338f15c029/full_zondervan_bible_dictionary_online.pdf
    • http://kirogebi.epizy.com/programa_de_honores_a_la_bandera_en_word.pdf
    • https://uploads.strikinglycdn.com/files/cdeb6a3b-168c-4de5-b50c-3f6d884006e3/what_are_examples_of_adverb_of_intensity.pdf
    • https://uploads.strikinglycdn.com/files/319ac0d9-0c9d-48e0-83f0-bef6135a045c/10858732671.pdf
    • http://vidujujesux.rf.gd/amazing_grace_full_lyrics.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e96f.bin
67d5328b27efc88a3ac772441dc2dcadae7fcb9dfa8614ea084e6a96316e145d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE96F 5120 bytes
font_01_sfnt_off0000face.bin
3131da11c0bc18a5eed8b065ffdfe3e7a56e8867a77a3ccc0ad616dce4dfdede		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFACE 10900 bytes
font_02_sfnt_off00012030.bin
267fa55b14ef4cf900efb316cf3a679441c5cb47c67db7c400ecf172ea91784f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12030 16132 bytes
font_03_sfnt_off0001351d.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1351D 4324 bytes

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